There’s a popular narrative right now that video is invading podcasting, and that podcasts were always meant to be audio-only. But this isn’t historically accurate.
Video has been part of podcasting since nearly the beginning. Steve Jobs demoed video podcasts on stage in October 2005; just four months after Apple added podcast support to iTunes. He showed them playing on the new iMac, on the new iPod Video, and available for subscription in the iTunes Music Store.
